Quadrature-Phase Shift-Keying (QPSK)
Quadrature-phase shift keying (QPSK) is a form of phase-shift keying in which four different phase angles are used. In QPSK, the four angles are usually separated by 90° spacing.
Quadrature-phase shift keying (QPSK) is a form of phase-shift keying in which four different phase angles are used. In QPSK, the four angles are usually separated by 90° spacing.